Hi guys this is my first post . I am thinking on buying a flowmaster 44 series for my 1996 jeep grand cherokee lerardo 4.0 and I just wanted to know if any of you guys have done this and what size exhaust you guys used I'm not sure if I should go with a 3" or keep the original size

 

Going up to three inch pipe will do more harm than good.

 

So I should stick to the original got it thanks